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knock-out 

To steal.
1. "Tonight I'm going to go knock-out a set of Acura Type-R rims for my Civic HF".
knock-out by Sim-Dum Gweye September 23, 2003

knock out 

to go to sleep. mainly said in reference to a full nights rest, 7 or more hours.
hey man, i'm about to knock out. laters.
knock out by noooooooooope June 10, 2009

knock out 

(Informal Noun) a person or thing that is overwhelmingly attractive.
Svetlana knew how to dress to perfectly complement her tall, athletic frame. By virtue of her bright eyes, silky long hair, and a smile that could stop a revolution, people widely regard her as a knock out.
knock out by JigHexadecimal September 2, 2007

Knock Out 

A sexy transformer who likes the way he looks in steel-belted radials. He attempted to join the Autobots in the television series Transformers - Prime on the last episode only to be rejected, but in the movie he was accepted. Knock Out is very concerned about keeping his finish clean and his paint looking fabulous.
Knock Out is not only an automobile, but an automobile enthusiast.
Knock Out by carryingthebanner October 23, 2017

Knock out 

I'm so tired so I'm gonna knock out!
Knock out by Blabbermouth June 23, 2014

Knock out 

What happens to anybody who steps up to Kash!
Two hits He hits you, you hit the floor. Knock out!
Knock out by Homies 2 December 23, 2008
More from Urban Dictionary
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026

Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
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